Hi guys, Here is an update, i think i have found the right statement that bring Postgresql 9.6.1 under heavy-use of resources (CPU) in a massive benchmark. I only try to remove one simple, but very simple, condition: and (grulist.stato is null or grulist.stato!=2) Grulist.stato field is numeric and has a btree index on it. Very strange: if i leave only one condition (example: grulist.stato is null) no heavy-cpu use occurred (but i need the two conditions with the OR). But when combyning the two conditions (grulist.stato is null OR grulist.stato != 2) something happens... The single explain analyze is very fast and maybe there is something that create a strange condition for postgresql 9.6.1 that takes CPU resources. The btree index is right for this (numeric) two conditions? Thank you again! /F -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
